using System;

​

public class CurrencyConverter

{

    public static double ConvertPoundsToCurrency(double pounds, string currency)

    {

        switch (currency.ToUpper())

        {

            case "USD":

                return pounds * 1.38; // Replace with the current exchange rate.

            case "EUR":

                return pounds * 1.16; // Replace with the current exchange rate.

            case "YEN":

                return pounds * 150.0; // Replace with the current exchange rate.

            case "YUAN":

                return pounds * 9.16; // Replace with the current exchange rate.

            default:

                throw new ArgumentException("Unsupported currency. Please choose USD, EUR, YEN, or YUAN.");

        }

    }

​

    public static void Main(string[] args)

    {

        Console.WriteLine("Enter the amount in pounds: ");

        double pounds = Convert.ToDouble(Console.ReadLine());

​

        Console.WriteLine("Choose the target currency (USD, EUR, YEN, or YUAN): ");

        string currency = Console.ReadLine();

​

        try

        {

            double result = ConvertPoundsToCurrency(pounds, currency);

            Console.WriteLine(pounds + " pounds is equivalent to " + result +" "+ currency);

        }

        catch (ArgumentException ex)

        {

            Console.WriteLine(ex.Message);

        }

    }

}